(A) HR production rate of tomato leaves carrying TRV2 (CK) or TRV2:ShARPC3 at 6, 18, 24, 48, and 72 hpi, respectively. (B) H2O2 production in CK or TRV2:ShARPC3 tomato leaves at 6, 18, 24, 48, and 72 hpi, respectively. (C–H) Microscopic detection of H2O2 accumulation at interaction sites of O. neolycopersici with control (B,D,F) and silenced ShNPSN11 (A,C,E). Co, conidium; App, appressorium; Agt, appressorium germ tube; Sh, secondary hyphae. Bar, 50 μm.